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Did you use the libraries to make something similar as below? ... mitter.htm

It should be single chip solution for IR learning and transmitting.

Their chip costs 10 USD which is way too much. I want similar chip but for max. 2-3 USD.

So I don't need the actual key pad, just an MCU interface to integrate in an electronic circuit.

The chip should operate in 2 modes: learn mode and playback mode.

The chip should be able to learn, and play back the stored IR pattern on demand.

Minimal 16 IR commands should be storable.